Tech: SAM Modules query
MBWorld Fanatic!
Joined: Mar 2006
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From: San Jose area
'19 E63S sedan
Every time you flick a switch you're sending a signal to a SAM, which then activates the consumer. Having two hubs for electrical connections eliminates a lot of heavy, expensive copper and replaces it with much smaller signal paths. The old days had headlight current flowing through the firewall to the headlight switch. Now it goes from the front SAM, with the fuses, directly to the headlights plus a thin cable from the switch to the SAM. Multiply that by hundreds of electrical paths and you see the point.
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Senior Member
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2018 AMG E63s Ed1
Every time you flick a switch you're sending a signal to a SAM, which then activates the consumer. Having two hubs for electrical connections eliminates a lot of heavy, expensive copper and replaces it with much smaller signal paths. The old days had headlight current flowing through the firewall to the headlight switch. Now it goes from the front SAM, with the fuses, directly to the headlights plus a thin cable from the switch to the SAM. Multiply that by hundreds of electrical paths and you see the point.
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W213 All-terrain
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2018 AMG E63s Ed1
MBWorld Fanatic!
Joined: Dec 2011
Posts: 1,692
Likes: 488
From: Spain UTC/GMT +2 hours
W213 All-terrain
What do you want to achieve?
Last edited by trigital; May 30, 2025 at 05:26 PM.
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Out Of Control!!
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From: Silicon Valley
W212 MY'14 M276-3.5NA @75kMi
HARDLY ROCKET-SCIENCE
It can read data from every of the 45+ modules.
The network configuration is all diagrammed in WIS format with all the distinct nodes interactions.
It's high-tech but hardly reliable. Simple chassis "Reboot" help sanitize legendary battery drains under 5mn.
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Joined: Jun 2023
Posts: 425
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2018 AMG E63s Ed1
if you'd like to review the busy CAN Modules faults, its easy with a simple $150 MB scanner.
It can read data from every of the 45+ modules.
The network configuration is all diagrammed in WIS format with all the distinct nodes interactions.
It's high-tech but hardly reliable. Simple chassis "Reboot" help sanitize legendary battery drains under 5mn.
It can read data from every of the 45+ modules.
The network configuration is all diagrammed in WIS format with all the distinct nodes interactions.
It's high-tech but hardly reliable. Simple chassis "Reboot" help sanitize legendary battery drains under 5mn.
I can read Canbus signals with an O-scope (Lecroy HRO66zi) that has CANbus/Lin/MOST debugging or a canbus reader. Just wanted to know some tech background on it is all.
Last edited by figuwx; Jun 4, 2025 at 03:50 PM.
Out Of Control!!
Joined: Apr 2019
Posts: 11,922
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From: Silicon Valley
W212 MY'14 M276-3.5NA @75kMi
CAN/LIN Network decoder
How do you use its output ?
With your hability to interact with nodes you can do signal troubleshooting.
I think MB has an issue with multiple voltage threshold levels on different branches of the same network. MB CAN is forced to be voltage sensitive where it should not.
Last edited by CaliBenzDriver; Jun 4, 2025 at 06:16 PM.
